BANTE DDS-12DW User manual

Category
Measuring, testing & control
Type
User manual

BANTE DDS-12DW is a benchtop conductivity meter designed for accurate and reliable conductivity measurements in various applications. With its 1 to 3 point calibration capability and automatic temperature compensation, it ensures precise results. The meter features a user-friendly interface, allowing easy selection of cell constants, calibration points, and temperature units. It also offers adjustable auto-hold and auto-power-off functions for convenient operation.

BANTE DDS-12DW is a benchtop conductivity meter designed for accurate and reliable conductivity measurements in various applications. With its 1 to 3 point calibration capability and automatic temperature compensation, it ensures precise results. The meter features a user-friendly interface, allowing easy selection of cell constants, calibration points, and temperature units. It also offers adjustable auto-hold and auto-power-off functions for convenient operation.

DDS-12DW Benchtop Conductivity Meter
USER MANUAL
Bante Instruments Inc.
1 I Overview
Introduction
Thank you for selecting the DDS-12DW benchtop conductivity meter.
This user manual provides a step-by-step guide to help you operate
the meter, please carefully read the following instructions before use.
Any use outside of these instructions may invalidate your warranty
and cause permanent damage to the meter.
Environmental Conditions
Before unpacking, ensure that current environmental conditions meet
the following requirements.
Relative humidity is less than 80%
Ambient temperature between 0° C (32° F) and 50° C (122° F)
No potential electromagnetic interference
No corrosive gas exists
Packing List
The following list describes all components of the meter. If any items
are missing or damaged, contact the supplier immediately.
DDS-12DW meter
Electrode arm
9V DC power adapter
CON-1 conductivity electrode
TP-10K temperature probe
Conductivity standard solutions 84 µ S/cm, 1413 µ S/cm, 12.88 mS/cm
Meter Overview
1 Sensor connections
2 Base plate of electrode arm
3 Display
4 Membrane keypad
1 Socket for conductivity electrode (6-pin mini DIN)
2 Socket for temperature probe (3.5 mm jack)
3 Socket for power adapter
Icon
Description
Indicates that the meter is in the measurement mode
Indicates that the meter is in the calibration mode
Indicates that the meter is in the setup mode
Indicates that the measurement is locked
Indicates that the automatic temperature compensation
is enabled
Overview I 2
Key
Function
Switch the meter on or off
Lock or unlock the measurement
Exit the calibration, settings and return to the
measurement mode
Start calibration
Press and hold the key to enter the setup menu
Set the temperature
Increase value or scroll up through a list of
options
Decrease value or scroll down through a list of
options
Confirm the calibration or displayed option
Installing the Electrode Holder
Take out the electrode arm from the accessory box. The base plate of
electrode arm has a circular hole, the electrode arm has a connecting
rod. Insert the connecting rod into the circular hole and swivel the
electrode arm 90 degrees. The electrode holder is now ready to swing
into desired position.
Adjusting the Electrode Arm
After installation, if the electrode arm automatically rises or falls, you
are able to adjust the screw until arm locate at any position.
1
2
3
3 I Overview
Connecting the Temperature Probe
2.1 Place the temperature probe into the circular hole located at the
center of the electrode arm.
2.2 Insert the jack plug to the connector socket labeled ATC. Ensure
the connector is fully seated.
Connecting the Power Adapter
3.1 Insert the connector of power adapter to the power socket.
3.2 Plug the 9V DC power adapter into the wall outlet.
Prior to Use
Soak the conductivity electrode for about 10 minutes in tap water to
remove dirt and oil stains on the sensor surface.
10 minutes
Menu Item
Option and Description
Cell Constant
Set the cell constant to match connected conductivity
electrode.
K = 0.1
K = 1 (default)
K = 10
Custom
Calibration Points
Set the number of calibration points.
1 point (default)
2 points
3 points
Temperature Coefficient
Set the temperature coefficient for linear temperature
compensation.
0.0 to 9.9%/° C (default 2.1)
1
2
3
Setup I 4
Measurement Unit
Set the default temperature unit.
Degrees Celsius (default)
Degrees Fahrenheit
Auto-Hold
If enabled, the meter will automatically sense and
lock the measurement endpoint.
Enable
Disable (default)
Auto-Power Off
If enabled, the meter will automatically switch off
if no key is pressed within 3 hours.
Enable
Disable (default)
Factory Reset
Reset the meter to factory default settings. Note,
the meter must be recalibrated.
Enable
Disable (default)
Setting the Default Option
1. In the measurement mode, press and hold the key to enter the
setup menu.
2. Press the / key to select an option, press the Enter key to
confirm and switch to the next menu item.
3. Repeat the steps above until the meter returns to the
measurement mode.
To exit the setup menu without saving changes, press the Meas key.
Electrode
Measurement Range
Cell Constant
CON-0.1
0.5 to 100 µ S/cm
K = 0.1
CON-1
10 µ S/cm to 20 mS/cm
K = 1
CON-10
100 µ S/cm to 200 mS/cm
K = 10
Option
Menu item
5 I Calibration
Conductivity Calibration
Automatic Calibration
The 12DW meter allows 1 to 3 points conductivity calibration. Before
calibration, ensure that selected cell constant (K = 0.1, 1, 10) matches
connected electrode. If you have selected the manual calibration
( ), the meter will wait to enter a cell constant.
For better accuracy, we recommend to perform 3 points calibration or
select a standard solution closest to the sample conductivity you are
measuring. The meter will automatically detect the standard solution
and prompt the user to perform the calibration. The following table
shows the default standard solution for each measurement range.
Measurement Range
Default Standard Solution
0 to 20 µ S/cm
10 µ S/cm
20 to 200 µ S/cm
84 µ S/cm
200 to 2000 µ S/cm
1413 µ S/cm
2 to 20 mS/cm
12.88 mS/cm
20 to 200 mS/cm
111.8 mS/cm
If you have changed the conductivity electrode, the meter must be
recalibrated. Every electrode has a different cell constant.
Single Point Calibration
Ensure that you have selected 1 point calibration in the setup menu.
1.1 Press the Cal key, the display shows ----/CAL1, the meter waits
for recognizing the standard solution.
1.2 Rinse the conductivity electrode with distilled water, then rinse
with a small amount of standard solution.
1.3 Place the electrode (and temperature probe) into the standard
solution, stir gently to remove air bubbles trapped in the slot of
the sensor.
The meter will automatically show the calibration standard (e.g.,
1413 µ S/cm).
Measurement I 6
Temperature Calibration
The meter is supplied with a temperature probe for measurement and
temperature compensation. If the measured temperature reading
differs from that of an accurate thermometer, the probe needs to be
calibrated.
1. Connect the temperature probe to the meter and place into a
solution with a known accurate temperature.
2. Press the °C key to enter the temperature setting.
3. Press the / key to modify the temperature value.
4. Press the Enter key to save.
Measurement
1. Rinse the conductivity electrode with distilled water. Place the
electrode (and temperature probe) into the sample solution and
stir gently. Ensure that no air bubbles on the sensor surface.
2. If the Auto-Hold option in the setup menu is enabled, the meter
will automatically sense a stable reading and lock measurement,
the icon appears on the display. Press the Meas key to resume
measuring.
If the option is disabled, the meter will continuously measure
and update the readings.
Platinum black coating
7 I Appendix
Appendix
Preparation of Conductivity Standard Solutions
1. Place the analytical grade potassium chloride (KCl) in a beaker
and dry in an oven for about 3 hours at 105° C (221° F), then cool
to room temperature.
2. Add the reagent to a 1 liter volumetric flask according to the
instructions in table below.
Conductivity Standard
Reagent
Weight
84 µ S/cm
KCl
42.35 mg
1413 µ S/cm
KCl
745.5 mg
12.88 mS/cm
KCl
7.45 g
111.8 mS/cm
KCl
74.5 g
3. Fill the distilled water to the mark, mix the solution until the
reagent is completely dissolved.
Calculating the Cell Constant
1. Refer to the Manual Calibration section to set the cell constant
to 1.00.
2. Place the electrode into a standard solution and record the
reading.
3. Calculate the cell constant using the following formula.
K = × G
Where:
K = Cell constant
Cstd = Value of conductivity standard solution
Cmeas = Measured value
G = Raw cell constant (0.1, 1 or 10)
Calculating the Temperature Coefficient
1. Do not connect the temperature probe to the meter.
2. Press and hold the °C key to enter the temperature setting.
3. Press the / key to set the temperature to 25° C and press
the Enter key to confirm.
4. Place the conductivity electrode into the sample solution, record
the temperature value TA and conductivity value CTA.
5. Condition the sample solution and electrode to a temperature TB
that is about 5 to 1 C different from TA. Record the conductivity
value CTB.
6. Calculate the temperature coefficient using the formula below.
TC =
Order Code
Description
CON-0.1
For measuring the pure water
CON-1
For general purpose applications
CON-10
For measuring the high conductivity liquids
Order Code
Description
TP-10K
3.5 mm jack plug, 1 m (3.3 ft) cable
Order Code
Description
ECCS-84
Conductivity standard solution 84 µ S/cm, 480 ml
ECCS-1413
Conductivity standard solution 1413 µ S/cm, 480 ml
ECCS-1288
Conductivity standard solution 12.88 mS/cm, 480 ml
ECCS-1118
Conductivity standard solution 111.8 mS/cm, 480 ml
Order Code
Description
DCPA-9V
9V DC power adapter, european standard plug
Cstd
Cmeas
CTB CTA
CTA (TB 25) CTB (TA 25)
Appendix I 8
Meter Specifications
Model
Bante 510
Conductivity
Range
0.01 µ S/cm to 200.0 mS/cm
Resolution
0.001, 0.01, 0.1, 1
Accuracy
± 1% F.S.
Calibration Points
1 to 3 points
Calibration Solutions
10 µ S/cm, 84 µ S/cm, 1413 µ S/cm,
12.88 mS/cm, 111.8 mS/cm
Temperature Compensation
0 to 100° C (32 to 212° F), manual or
automatic
Temperature Coefficient
0.0 to 9.9%/° C
Reference Temperature
25° C
Cell Constant
K = 0.1, 1, 10 or custom
Temperature
Range
0 to 105° C (32 to 221° F)
Resolution
0.1° C (0.1° F)
Accuracy
± 1° C (± 1.8° F)
Calibration Point
1 point
Other Specifications
Operating Temperature
0 to 50° C (32 to 122° F)
Storage Temperature
0 to 60° C (32 to 140° F)
Relative Humidity
< 80% (non-condensing)
Display
LCD, 135 × 75 mm (5.3 × 2.9 in.)
Power Requirements
9V/400mA DC power adapter
Auto-Off
3 hours after last key pressed
Dimensions
210 (L) × 205 (W) × 75 (H) mm,
(8.2 × 8.0 × 2.9 in.)
Weight
1.5 kg (3.3 lb)
Fault
Cause and Corrective Action
Electrode dried out.
Soak the conductivity electrode in tap water for
about 10 minutes.
Measurement exceeded the maximum range.
Check the electrode and sample.
Drifting erratic
readings
Check whether electrode is contaminated, clogged
or broken.
Setting value does not match calibration solution.
Reset the calibration value or check the calibration
solution.
Electrode is broken.
Replace the conductivity electrode.
The information in this document is subject to change without notice.
Copyright © Bante Instruments Inc, 2022. All rights reserved.
Disposal
This product is required to comply with the European Union’s Waste
Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC and
may not be disposed of in domestic waste. Please dispose of product
in accordance with local regulations at the collecting point specified
for electrical and electronic equipment.
Warranty
The warranty period for meter is one year from the date of shipment.
Above warranty does not cover the electrode and standard solutions.
Out of warranty products will be repaired on a charged basis.
The warranty on your meter shall not apply to defects resulting from:
Improper or inadequate maintenance by customer
Unauthorized modification or misuse
Operation outside of the environment specifications of the
products.
For more information, please contact the supplier.
Office: 4715 Castlewood St., Sugar land, TX 77479, USA
Tel: (+1) 346-762-7358
Factory: F3, Building 2, No.2185, Laifang Rd., Shanghai 201615, China
Tel: (+86) 21-6404-1598
E-mail: banteinstrument@hotmail.com
www.bante-china.com
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BANTE DDS-12DW User manual

Category
Measuring, testing & control
Type
User manual

BANTE DDS-12DW is a benchtop conductivity meter designed for accurate and reliable conductivity measurements in various applications. With its 1 to 3 point calibration capability and automatic temperature compensation, it ensures precise results. The meter features a user-friendly interface, allowing easy selection of cell constants, calibration points, and temperature units. It also offers adjustable auto-hold and auto-power-off functions for convenient operation.

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